1)Functon:Good sealing function ,attenuating shock 2)Main material: EPDM NBR FKM CR NR SBR SILICON FKM rubber O- ring Fkm ring Features:1) Materials: different kinds of rubber & plastic, such as SILICON,NBR,SBR,NR,CR,EPDM.2) Applications: rubber parts,, industrial parts, household parts, motorcycle parts,electronicsparts, gasket rubber, O-rings.3) Processing methods: compression, injection, ...